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  1. What is a firewall? - Cisco

    A firewall is a network security device that separates a trusted internal network from an external network deemed untrustworthy, such as the internet. It regulates incoming and outgoing …

  2. What is network security? - Cisco

    A firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules.

  3. Networking Basics: What You Need To Know - Cisco

    Depending on your security needs, for example, you can choose a router with a firewall, a virtual private network (VPN), or an Internet Protocol (IP) communications system.

  4. What is a network gateway? - Cisco

    As an entry or exit point for data, a gateway can be used in a variety of security processes, such as a firewall to scan and filter data or a proxy server to maintain restricted access to certain …

  5. What Is Network Segmentation? - Cisco

    Some traditional technologies for segmentation included internal firewalls, and Access Control List (ACL) and Virtual Local Area Network (VLAN) configurations on networking equipment.

  6. What is a Router? - Definition and Uses - Cisco

    Embedded firewall and content filtering software provide an additional protection from unwanted content and malicious websites without affecting your online experience.

  7. What Is Network Switching? - Cisco

    Networking experts need to configure managed switches, which are designed for use in large, complex networks that demand reliability and security. These switches offer more capacity …

  8. What is a Network? A network refers to two or more connected computers that can share resources such as data, a printer, an Internet connection, applications, or a combination of …

  9. What Is Network Address Translation (NAT)? - Cisco

    Network Address Translation (NAT) is a service that operates on a router or edge platform to connect private networks to public networks like the internet. NAT is often implemented at the …

  10. How to Setup a Firewall in 6 Steps for Your Small Business

    Learn how to setup a firewall with ease. Get your firewall setup and configured today so your first line of defense is in place and protecting your business.